mirror of
https://github.com/chainguard-dev/osquery-defense-kit
synced 2024-12-19 04:24:30 +00:00
97 lines
2.5 KiB
SQL
97 lines
2.5 KiB
SQL
-- A program where the parent PID is not on disk
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--
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-- Reveals boopkit if a child is spawned
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-- TODO: Make mount namespace aware
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--
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-- false positives:
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-- * none observed
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--
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-- references:
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-- * https://attack.mitre.org/techniques/T1070/004/ (Indicator Removal on Host: File Deletion)
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--
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-- false positives:
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-- * none observed
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--
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-- tags: persistent daemon
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SELECT -- Child
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p0.pid AS p0_pid,
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p0.path AS p0_path,
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p0.name AS p0_name,
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p0.cmdline AS p0_cmd,
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p0.cwd AS p0_cwd,
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p0.cgroup_path AS p0_cgroup,
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p0.euid AS p0_euid,
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p0_hash.sha256 AS p0_sha256,
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-- Parent
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p0.parent AS p1_pid,
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p1.cgroup_path AS p1_cgroup,
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p1.path AS p1_path,
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REGEX_MATCH (p1.path, '(.*)/', 1) AS p1_dirname,
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p1.name AS p1_name,
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p1.cmdline AS p1_cmd,
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p1_hash.sha256 AS p1_sha256,
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-- Grandparent
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p1.parent AS p2_pid,
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p2.name AS p2_name,
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p2.path AS p2_path,
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p2.cmdline AS p2_cmd,
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p2_hash.sha256 AS p2_sha256
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FROM
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processes p0
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LEFT JOIN hash p0_hash ON p0.path = p0_hash.path
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LEFT JOIN processes p1 ON p0.parent = p1.pid
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LEFT JOIN hash p1_hash ON p1.path = p1_hash.path
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LEFT JOIN processes p2 ON p1.parent = p2.pid
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LEFT JOIN hash p2_hash ON p2.path = p2_hash.path
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WHERE
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p1.on_disk != 1
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AND p0.on_disk = 1
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AND NOT p0.pid IN (1, 2)
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AND NOT p1.pid IN (1, 2) -- launchd, kthreadd
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-- Probably a software upgrade
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AND NOT p1_dirname IN (
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'/usr/lib/electron22',
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'/usr/bin',
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'/usr/libexec',
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'/usr/lib/systemd',
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'/usr/lib',
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'/usr/share/code'
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) -- long-running launchers
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AND NOT p1.name IN (
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'bash',
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'dnf',
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'ninja',
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'make',
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'electron',
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'gnome-terminal',
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'fish',
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'gnome-shell',
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'kubelet',
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'kube-proxy',
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'Docker Desktop',
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'lightdm',
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'nvim',
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'sh',
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'slack'
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)
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AND NOT (
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p1.path LIKE '/app/%'
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AND p1.cgroup_path LIKE '/user.slice/user-1000.slice/user@1000.service/app.slice/%'
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)
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AND NOT p2.name = 'bwrap'
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AND p1.cgroup_path NOT LIKE '/system.slice/docker-%'
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AND p1.cgroup_path NOT IN (
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'/system.slice/docker.service',
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'/system.slice/containerd.service'
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)
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AND p1.cgroup_path NOT LIKE '/user.slice/user-1000.slice/user@1000.service/user.slice/nerdctl-%'
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AND p1.cgroup_path NOT LIKE '/user.slice/user-1000.slice/user@1000.service/user.slice/libpod-%'
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AND p1.cgroup_path NOT LIKE '/lxc.monitor.n%'
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AND p1.path NOT LIKE '/opt/homebrew/Cellar/%'
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AND p1.path NOT LIKE '/tmp/.mount_%/%'
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AND p1.path NOT LIKE '%google-cloud-sdk/.install/.backup%'
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AND NOT (
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p1.name LIKE 'kworker/%+events_unbound'
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AND p0.name IN ('modprobe')
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)
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